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TLC5945PWPR

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by adom

Texas Instruments LED Drivers, TSSOP-28-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TLC5945PWPR

Texas Instruments · LED Drivers · TSSOP-28-EP

TLC5945PWPR from Texas Instruments, in a TSSOP-28-EP. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Ground.
2 BLANK input Active-high blanking input; forces all OUTn outputs off and resets GS counter when high.
3 XLAT input Level-triggered latch input; writes data from input shift register to GS or DC register when high, holds data when low.
4 SCLK input Serial data shift clock.
5 SIN input Serial data input.
6 MODE input Mode select input; low for grayscale mode, high for dot correction mode.
7 OUT0 output LED constant-current sink output; 0 mA to 80 mA.
8 OUT1 output LED constant-current sink output; 0 mA to 80 mA.
9 OUT2 output LED constant-current sink output; 0 mA to 80 mA.
10 OUT3 output LED constant-current sink output; 0 mA to 80 mA.
11 OUT4 output LED constant-current sink output; 0 mA to 80 mA.
12 OUT5 output LED constant-current sink output; 0 mA to 80 mA.
13 OUT6 output LED constant-current sink output; 0 mA to 80 mA.
14 OUT7 output LED constant-current sink output; 0 mA to 80 mA.
15 OUT8 output LED constant-current sink output; 0 mA to 80 mA.
16 OUT9 output LED constant-current sink output; 0 mA to 80 mA.
17 OUT10 output LED constant-current sink output; 0 mA to 80 mA.
18 OUT11 output LED constant-current sink output; 0 mA to 80 mA.
19 OUT12 output LED constant-current sink output; 0 mA to 80 mA.
20 OUT13 output LED constant-current sink output; 0 mA to 80 mA.
21 OUT14 output LED constant-current sink output; 0 mA to 80 mA.
22 OUT15 output LED constant-current sink output; 0 mA to 80 mA.
23 XERR tri_state Open-drain error output; goes low when LED open detection (LOD) or thermal error flag (TEF) is detected.
24 SOUT output Serial data output.
25 GSCLK input Reference clock for grayscale PWM control.
26 TEST input Test pin; must be connected to VCC.
27 IREF bidirectional Reference current input terminal; external resistor sets maximum output current for all 16 channels.
28 VCC power_in Power supply voltage input; 3.0 V to 5.5 V.
29 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-28-EP
Category LED Drivers
Pins 29

CAD (KiCad official)

  • Symbol: TLC5945PWPR
  • Footprint: Package_SO:TSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP2.85x6.7mm
  • 3D model: TSSOP-28-EP (KiCad packages3D, STEP)
  • 3D model files: tlc5945pwpr-etched.step / tlc5945pwpr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tlc5945pwpr.step / tlc5945pwpr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (32 pp, sha256 0172ff7c48182b94, retrieved 2026-10-07, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF